Throwing ValidationException from afterStateUpdated

Hi, is it possible to throw a ValidationException from the afterStateUpdated lifehook on a form field?
Is there any other way to do it using halts?

>afterStateUpdated(function ($state, Get $get, callable $set) {
   if($pivotData->isValidTimeSlot($state)){
      // Do something
  else{
    throw ValidationException::withMessages(['start_datetime' => 'Datetime is invalid']);
  }
}

>afterStateUpdated(function ($state, Get $get, callable $set) {
   if($pivotData->isValidTimeSlot($state)){
      // Do something
  else{
    throw ValidationException::withMessages(['start_datetime' => 'Datetime is invalid']);
  }
}

>afterStateUpdated(function ($state, Get $get, callable $set) {
   if($pivotData->isValidTimeSlot($state)){
      // Do something
  else{
    throw ValidationException::withMessages(['start_datetime' => 'Datetime is invalid']);
  }
}

>afterStateUpdated(function ($state, Get $get, callable $set) {
   if($pivotData->isValidTimeSlot($state)){
      // Do something
  else{
    throw ValidationException::withMessages(['start_datetime' => 'Datetime is invalid']);
  }
}

But this doesnt seem to work. I can send Notifications but I want the validation error to trigger

Solution

I figured this out, apparently the field has to be called

data.start_datetime

data.start_datetime

data.start_datetime

data.start_datetime instead of just

start_datetime

start_datetime

start_datetime

start_datetime
so

throw ValidationException::withMessages(['data.start_datetime' => "error here"]);

throw ValidationException::withMessages(['data.start_datetime' => "error here"]);

throw ValidationException::withMessages(['data.start_datetime' => "error here"]);

throw ValidationException::withMessages(['data.start_datetime' => "error here"]);

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Throwing ValidationException from afterStateUpdated

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